Developer Update posts occur every 2nd Monday (unless a wallet release has occurred that week) and document upcoming changes to the wallet and features to look for in upcoming releases. It serves as an easy method for the developers to showcase their efforts between wallet updates.
I aim to write these updates in a way that the average Gridcoin user can understand. The core development team approves and helps write these posts.
Wallet releases are much more straightforward: they document when a new wallet version has been released, the changelog from GitHub, and the links to the relevant downloads for various operating systems.
RE: Gridcoin Developer Update July 2nd, 2018