Yes, Genesys has introduced a new set of SDKs (marketing term - Universal SDK) in version 7 and these SDKs are considered to be a “replacement” for T-Library based SDKs (ActiveX/Java Toolkit and C T-Lib). I have information that T-Lib SDKs won’t be available in version 7.5 and start of EOL (End-Of-Life) phase for these products will be announced soon. EOL means that there won’t be new versions available but the old ones (6.5 - 7.2) stays supported for next 2 or 3 years (without any guarantee).
The positive side of this change is that there are new SDKs for Java and .NET supporting more features/products then T-Lib based SDKs. The negative is that all SDKs are licensed. You can find documentation for the new SDKs on Genesys Technical Support web site or on Genesys DevZone.