Architecture Chat Tomorrow... Some possible things to talk about:

Subversion 1.5 - and it's new merge tracking features.

WCF/WF Features in .Net Framework 3.5 SP1 - a blog post caught my eye with things I hadn't noticed before mostly around DataContract Serialization i.e. ability to serialize graphs (not just trees), an attribute-free mode for the serializer and a suite of strongly typed classes to make implementing AtomPub easier (i.e. Workspaces etc.).

P/Invoke Interop Assistant - handy little tool, about 5 years too late for me :)

Umbrella Project - Interesting project, take a look at Ayendes involved post for an overview.  The ExtensionPoint<T> approach for making extensions more discoverable is interesting - something we discussed right back when the first beta's of VS2008 were on the horizon.

I'd personally also like to talk about some thoughts people have on the bare minimums for a usable language and domain specific languages in particular - i.e. debugging, native support for comments etc. and some experiences with a rather hostile Model driven architecture transformation language I've had to deal with over the last couple of weeks :)

As usual, if anyone has any topics - feel free to leave a comment, send me an email etc.

Notes from previous meetings and directions etc. can be found here on my wiki - anybody is welcome to come along.