Just wanted to note that this bundle thread is still active.
Also, Baen has (for now) retracted their statement that the new releases would be HTML only and have to be downloaded in pieces and stitched together. Instead, bundles will work as they always have and you can ignore them until full release, then download all the books with finished proof/editing in place.
However, bundles will disappear by about the 15th of the month before the "release date" (the month name of the bundle), which means at most three bundles active at any time and usually only two. If you don't get in on one when it is a pre-order, then you miss out.