It's actually kind of a step backwards in that respect. It allows developers familiar with Flash to compile directly for a target platform: even if they target Windows and Linux desktops, they're still targeting x86 which doesn't help Pandora/Pyra at all. At least with Flash there's some kind of chance of getting it to run.
Unless the dev releases their code under some kind of open source license and it can be compiled for the Pandyra directly, then it helps.