I have seen that there is a new add-on or feaure coming out called Solid Edge simulation. Is this the same as FEMAP Expess?

Solid Edge Simulation is an add-on to Solid Edge Foundation and Solid Edge Classic. (It is included in Solid edge Premium as of version ST2).

Solid Edge Simulation is an embedded FEA tool which allows users to do FEA on both single components and assemblies. It is a product aimed at non-specialist, and there is a migration path to FEMAP which can be used for specialist FEA work.

FEMAP Express that has been available in Solid Edge Classic (version 18 to ST1) will be replaced by Solid Edge Simulation Express which enables the user to FEA on a single component only.

The migration path is thus: SE Simulation Express >> SE Simulation >> FEMAP