I know this is old, but i've got some useful information for those of you who want to go 35P. One the shift in language needs has been vast. Dari is just recently been classified as a language so it is hugely under strength, and French is also being beefed up thanks to increasing activity terrorist organization and otherwise in Africa. Check the In/Out Call lists for the other under strength languages, such as 35P(FR) is a French linguist in the call out list.
You may also find the Reg useful but it's rather out of date now:
AR 11-6: Army Foreign Language Program
Also any questions about DLI i may be able to answer.