The speaker, a representative from OpenSIPS, discusses the latest release of their software (OpenSIPS 3.3) and its updates in relation to Instant Messaging (IM) and Rich Communication Services (RCS), as well as extensions to both IMS and on the UC (Unified Communications) side. The focus was on the implementation of the MSRP protocol to enable features like RCS. The talk specifically highlighted the three-layer architecture on the bottom of the protocol stack, the addition of a call center, and improvements on TCP engines. The speaker also announced the OpenSIPS conference of 2023, where OpenSIPS 3.4 will be unveiled.