rumours said it and today it has been officially announced in a press release. Open-Xchange and funambol are working together closely on a mobility solution that delivers email push and PIM push capabilities. This is developed for one of the world's largest hosting company 1&1.
The funambol Open-Xchange connector is available in the funambol repository in section 3.
Please have a look at the press release and have fun with this technology!