We do not provide an SE 2.0 stack at this time; we had produced a demo application for ZigBee IP a couple of years ago during our initial efforts on that stack, but right now there is not strong enough commercial interest in SE2.0 (in comparison to SE 1.x) to warrant a product offering around this, so we have not implemented this yet and have instead been focusing R&D efforts on our own IPv6-based stack solution utilizing the Thread networking standard. (See http://news.silabs.com/press-release/introducing-thread-new-wireless-networking-protocol-home for information about this standard.)”. Please contact your SiLabs sales channel for latest product roadmap to learn more.
ZigBee IP Stack