Basically the Tanjay series phones will function in the same way in Lync as in OCS, using the same interface and connection prerequisites.
As described in the Tanjay version keying a SIP URI, Domain Name, User Name, and Password on the touchscreen was not the most fun experience each time.
With the new version supported on the Aries devices user simply enter their phone extension and PIN to sign-in directly on the phone.
As Microsoft Lync Server 2010 was recently released to the general public many professionals will be starting to get their hands on the new UC endpoints designed specifically for use with Lync Server 2010.
My colleague Mike Stacy first talked about the new line of Polycom CX solutions back in May of this year during early beta cycles of the Lync product.
Once a release is considered bug-free, it is promoted to the next channel.