The CryptoConnector project on GitHub is alive and well, having recently released v1.0.2 (a bug fix release)
This release contains some fixes to recognize bugfixes on the Coinbase end of things.
You can grab it here: https://github.com/chrisgwilliams/Coinbase.NET/releases
Coinbase has recently informed me of some new API changes, which will be incorporated into release v1.0.3.
One of the things I'm working on lately is a .NET Wrapper for a popular Bitcoin site. It's coming along pretty well, and the API is good, but a little particular (out of necessity) about how incoming requests are formed, so... it's taking a little longer than expected.
I'm also working on an article about CryptoCurrencies, and I'm doing a tour of user groups and some of the smaller conferences, to get other devs interested in what I'm working on.