We have finally released a backporting to Minecraft 1.5.2, bringing all of the new features that we brought to ExtrabiomesXL for Minecraft 1.6.2 to the more mod complete Minecraft 1.5.2. If you want to use all our new trees, logs and wood with all your other favorite (and almost as important, stable) mods, you are now free to do such.
Download ExtrabiomesXL 3.14.1 for Minecraft 1.5.2 (Forge 126.96.36.1997)
To sum up the new features, we have 6 new trees, and 6 new types of wood/planks/stairs and slabs to play with, some great new textures from our texture artist for a number of our old trees and plants. And let's not forget the plethora of bug fixes that we added fixing a large number of things. I would mention that the scarecrow finally has a use for people other than Anderzel, but really having a stationary mob scaring devise is not all that useful.
If you want more details on the changes that were made in 3.14.1 you can read about 3.14.1 here, and for more details about the changes that hit EbXL in 3.14.0.