If you try and brew update to Geode 1.10.0 you won't get it until our 1.10.0 homebrew PR <https://github.com/Homebrew/homebrew-core/pull/44586> gets through their checks and their Jenkins servers seem to be having problems this week so this is still in flight.
On geode develop I've had to revert the "add 1.10.0 to old versions" post release change because it was causing tests to fail. Until new JIRA GEODE-7250 is fixed we will not be testing 1.10.0 as an old version. This JIRA needs to be prioritized and the PR with the fix needs to include the revert changes to get 1.10.0 back in the old versions. Let me know if anyone has questions on these. -Dick