InstantOS 4.3.2 does not seem to be available yet nor ArubaOS 6.5.2
The latest available in the support site is 4.3.1.2 (InstantOS) from March 9th with no mention of IAP-365. For ArubaOS the latest is 6.5.1.3 from Feb. 16th.
I guess you will need the TAC or your Local SE to help you getting a Beta release!