What I read when this initially leaked a couple months ago was yes, it will have a GPU. However, a lot of the specifics seem to have disappeared from the internet in subsequent searches. I do remember reading that it would have the Qualcomm MSM7627 chipset, which is the same as what's in the Optimus One variants (S, V, M, C, T) and the Galaxy Prevail, among others. This chipset includes the Adreno 200 GPU.
Essentially, this phone should be directly comparable to the LG Optimus since it has the same chipset.