The Gummiboot UEFI boot manager from its inception was designed to be simple and it's still that way to do this day. While there hasn't been any major announcements since the project started, it's now up to version 12 as tagged on Monday. Gummiboot 12 was released just days after the Gummiboot 11 release.
Improved SecureBoot handling, better config file parsing, memory leak fizes, standardized error checks, adding Mac OS X to the boot options list, and automatically adding a config entry for the EFI Shell have been among the changes in the past half-year to Gummiboot. The only item yet to be completed on the simple EFI boot loader's TODO list is support to export automatically the added built-in config entry names.
Gummiboot continues to be primarily the work of Kay Sievers. For more details on the Gummiboot EFI boot-loader, see its FreeDesktop.org Wiki page and its Git repository.