The MMS version of SIM900D will be delay, the release date depends on the R&D schedule and maybe it will be release around the end of September.
I got that words from Simcom FAE about two weeks ago.
My search found some module which have native MMS support:
- Sagem Hilo
- Quectel M10
- Iwow TR-800
- Some Wavecom (sierrawireless) module via Open-AT
I plan to try Quectel M10 maybe next month.
Anyway, there is possibilities to send MMS via generic GPRS module but it is too difficult for me and will need a strong processor.