The phrase "outgoing version" refers to the older or previous version of something, which is being replaced by a newer or updated version. Full definition
Despite the increased size (see chart on page 54), new 3 - series models are between 44 and 132 pounds heavier than comparable outgoing versions. (automobilemag.com)
Alpina's outgoing version of the 6 - series Gran Coupe offered less power than the M6, producing 540 hp compared to the M6's 560 hp. (autoweek.com)
The 2019 Silverado features a sleeker, more aggressive exterior that's noticeably different from the more rectilinear outgoing version. (europe.autonews.com)