Teamcenter 11.4 was released at the end of last year, Teamcenter 11.5 will be released at the end of this year, if I remember correctly, so Teamcenter 12 might be released at the end of next year.
Production: NX10.0.3, VERICUT 8.1, FBM, MRL 3.1.7 | TcUA 10.1 MP7 Patch 0 (10.1.7.0) | TcVis 11.4
Development: C (ITK), .NET, Tcl/Tk Testing: NX12.0 | AWC 3.4 Preparing: NX12.0
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NX 11 | SW 2016 | Creo 4 | TcUA 11.4
Evaluating: AW 3.4