Should be. As I understand it, NeoPwn runs either as a chroot or an entirely seperate OS - I suspect chroot because the dualbooting methods weren't around when the beta came out.

The only thing I can imagine is if you're taking some of the modules included in NeoPwn2, copying them to the normal N900 OS, and loading them in the main OS. But I'm pretty sure the only thing you'd use for that would be the wifi driver - and I haven't heard anyone saying that was touched in the PR1.3 update.

Anyway, if I understand chroots, it should all still be fine. I think we would have seen more complaints/comments in this thread if the NeoPwn2 didn't run at all on the N900 after this update.

The only thing is NeoPwn uses an older build of the kernel (or at least when the beta came out it was older - I don't know if NeoPwn's been secretely updating the beta since PR1.3 came out). So when you run NeoPwn you wouldn't have the updates that PR1.3 brought with it effecting the inside-the-chroot stuff - as I understand it. I'm not an expert, so this is more or less an educated guess.