All of the tutorials have been updated to work with the new XNA 4.0 CTP! As the HiDef profile is not yet available in the CTP, I cannot completely finish the postprocessing tutorial #8 because the GetBackBufferData method is only supported in the HiDef profile. Once an update or the release happens the PDFs will be uploaded to reflect the changes.
All of the tags in the svn repository have already been updated (except #8) so if you want to get an early look at the changes feel free to check out a copy from http://code.google.com/p/hmengine-xna/
I’m thinking hard about getting another tutorial out the door for the 4.0 release. The two previous ones I was attempting to get going have become a big complicated mess and not something I’d really feel comfortable trying to release as a tutorial (it’s more like a paper for a big graphics conference or something…) so I’ll keep thinking and see if I can’t come up with something that fits well into the tutorial format and maybe takes advantage of some new features in the 4.0 API.
On a somewhat related note, I got one of those new XBox 360 250GB editions, and it really is as whisper quiet as they have been advertising.