Well, maybe not. The HTC Flyer is basically the identical twin of the EVO View, except for radios. (The Flyer comes in GSM/UMTS, CDMA, and WiFi-only varients, while the View has WiMAX for Sprint compatibility.) Thus, since the software that runs under the hood is basically the same, HTC should most likely have a working version ready for the EVO View, as soon as Sprint approves it.
And hopefully that's not long off, since Sprint initially advertised that the View would be compatible with Honeycomb shortly after release. And I don't know about you, but "shortly" in the tech world is definitely not five or more months.
The Flyer update is 210MB and bumps Android up to version 3.2. So keep your fingers crossed for a Sprint release coming soon!
[HTC Inside via Android Central]