An updated description of planned GMD flight tests (last update was post of April 17, 2013) as best as I can figure them out:
FY 2016: GM CTV-02+ (1Q FY 2016). This test replaces FTG-09, which was previously planned as an intercept test with a CE-II kill vehicle. The “+” indicates that the kill vehicle has the fix to the vibration problem that was demonstrated in the June 2014 FTG-06b test. One purpose of the test is to “demonstrate the performance of alternate divert thrusters” that might be used in future kill vehicles. One reason for developing the new thrusters is to reduce further the vibration problem involved in the failure of test FTG-06a in December 2010. The test is also intended to demonstrate “the end-to-end discrimination of a complex target scene including countermeasures.” Although officially not an intercept test, the presence of a target raises the prospect that the interceptor might actually hit the target, as happened in FTG-02 in 2006, without running the risk of failing an intercept test.
FTG-15 (4Q FY 2016 -1Q FY 2017). This is to be the first GMD intercept test against an ICBM-range target (range greater than 5,500 km). It also will be the first flight and intercept test of the new production CE-II Block-I version of the Exo-Atmospheric Kill Vehicle (EKV). With one exception, all subsequent planned GMD intercept tests will be against ICBM range targets.
FTG-11 (4Q, FY 2017). This is to be the first salvo (multiple interceptors fired at a single target) test of the GMD system. In it, both a CE-I and CE-II equipped ground-Based Interceptors (GBIs) will be fired at a single ICBM-range target. In its 2014 annual report, DOT&E noted that this test would be the first opportunity to implement its recommendation that the CE-I EKV be re-intercept tested following the failure of FTG-07 in July 2013.
GM CTV-03 (3Q, FY 2018). This will be a non-intercept test of a two-stage version of the currently three-stage Ground-Based Interceptor. Although the MDA has previously (in 2010) flight tested a two-stage GBI, this test will be of a new two-stage booster design derived from an upgraded design (C2) of the three-stage GBI. MDA is considering the possibility of deploying this two-stage booster with the Redesigned Kill Vehicle, potentially as early as 2020.
Designation unknown (FY 2018). Non-intercept flight test of the new Redesigned Kill Vehicle (RKV). It is possible that this test could be combined with CTV-03. However, since MDA Director Admiral Syring has stated that in 2016 MDA will begin acquisition of two additional boosters for RKV testing, this seems likely to be a separate test.
FTG-17 (3Q, FY 2019). This is to be the first intercept test using the two-stage version of the GBI booster.
Designation unknown (FY 2019). First intercept test of the new RKV.
FTG-13 (3Q FY 2020). This will be the first GMD test against two near-simultaneous targets. In an operational test, two GBI interceptors (a CE-I and a CE-II) will attempt to intercept two targets with IRBM and ICBM ranges. This test could be part of or coordinated with the BMDS Operational Test FTO-04 (which would likely involve a mix of Aegis, Aegis Ashore, THAAD and/or Patriot systems) which is also scheduled for 3Q FY 2020.
FTG-12 (4Q, FY 2021). No additional information appears to be available about this test or the subsequent FTG-14. Both tests are listed in the DOT&E’s 2011 Annual Report.
FTG-14 (4Q, 2022).
 Amy Butler, “Pentagon Plans Three Ambitious GMD ‘Firsts’,” Aviation Week and Space Technology, December 18, 2014.
 Prepared Testimony of J. Michael Gilmore, Director of Operational Test and Evaluation, Strategic Forces Subcommittee, Senate Armed Services Committee, March 25, 2015.
 Gilmore, Senate Armed Services Committee, March 25, 2015.
 Prepared Testimony of J. Michael Gilmore, Director of Operational Test and Evaluation, Strategic Forces Subcommittee, Senate Armed Services Committee, April 2, 2014; Prepared testimony of Admiral J. D. Syring, Defense Subcommittee, Senate Appropriations Committee, March 18, 2105.
 DOT&E Annual Report 2014, p. 312.
 Scott Maocione, “MDA Puts $51 Million in Budget To Develop Two-stage Booster,” Inside Defense SITREP, March 12, 2015.
 Butler, “Pentagon Plans”
 Prepared Statement of Vice Admiral J.D. Syring, Subcommittee on Strategic Forces, Senate Armed Services, March 25, 2015.
 Maocione, “MDA Puts $51 Million.”
 Butler, “Pentagon Plans;” Gilmore Prepared Testimony, 2014.