If you have questions about what needs to change from 0.9 to something newer, preferably 1.0.1, just ask! We are happy to help, either here or sup...@tincanapi.com or on one of the other mailing lists. If you are using a vendor that only supports 0.9, put *significant* pressure on them to upgrade their software.
I honestly have no idea if the other available LRSs support 0.9, but I can say that we'd *love* to not have to support it. Not because we don't have the resources (we do), but because it isn't what is best for the community.
With slightly less emphasis: use a library to communicate with an LRS (any LRS), it will be better for both parties, if one isn't available in a language you need or doesn't provide a feature you want, then come talk to us! (see one list here: http://tincanapi.com/libraries/, there may be others)
Brian
Tin Can API (/xAPI) Evangelist
Rustici Software
Here at In2itive.biz we are currently generating statements for 1.0.x with the help of the excellent C# library from the guys at Rustici.