Hi Mike,
Sorry to be confusing. This needs to be clarified:
The final release of LSWS 5.0 will include support for third party modules. Right now we're just at release candidate 1. There are still a number of features that have not been added to 5.0 (but that will be before the final release).
The feature that will be used to support PageSpeed is LSWS's support of an API for integrating third party modules. There is still a ways to go before LSWS Enterprise will support this, though. We are planning to release the API first for OpenLiteSpeed so that we can test functionality there and then bring it over to LSWS Enterprise. The API should be released for OpenLiteSpeed very, very soon, but we are not sure how long it will be before we can move it over to Enterprise.
PageSpeed will be supported through the use of a module that will integrate PageSpeed with LSWS through the API. In this case, it is not really a third party module, since we are building the module ourselves.
Sorry that this wasn't clear earlier. We're happy to answer any questions you have.
Cheers,
Michael