Mozilla has released the next major update for Thunderbird with the release of Thunderbird 38.0.1 on June 11th. Note, there was NOT a Thunderbird 38.0.0 release due to several bugs (which were addressed and fixed with the 38.0.1 release). Currently the new release is only available via download and manual install from the getthunderbird.com site. Automatic and manual (Help > About Thunderbird) updates are not currently enabled for this release yet (allow 24-72 hours for those updates methods to become available). Some of the new changes with Thunderbird 38.0.x: Lightning (Calendar) add-on is now included and enabled by default (with the option…