New discoveries about Forestry:
Forestry stained glass and 1.7 vanilla stained glass are separate blocks. Both still exist in game, which means we have 32 colors of stained glass. Only the vanilla version makes glass panes. The two variants of each color have the same name and a very similar texture (based on unstained glass). The difference tends to be that the Forestry version has more distinct outline and streak lines, whereas the vanilla is much lower contrast and softer looking. (Edit to add: only vanilla stained glass can be silk-touched. Forestry stained glass just breaks. It's also harder to get
Tin, Copper, and Bronze can now be made into blocks! (same recipe as iron, etc.) Not only does this mean more storage space, it also means three new placeable blocks, and that's always exciting.
Oh yes, also Apatite can be made into blocks...now I have a reason to find the stuff. :p
Also new to this version of Forestry: fireproof wood blocks. I haven't figured out the how-to yet, though. It actually seems like it might be a genetic trait that can be bred into trees.
Just discovered while looking up the stuff above: Forestry leaves can now be sheared! We can now get all those cool looking leaves to use as decorative blocks--shrubs, hedges, what have you. This was a serious disappointment to me when I started forestry. Note that leaf blocks that are placed will not pollinate/mutate, they are for decorative purposes only (so there's no weird genetic manipulation farms made of curtains of leaves, I guess).