This is to bring eap in sync with WildFly which has been using 2.0.3 since August.

Tomaz mentions

[1:41 PM] Tomaz Cerar: @RostislavSvoboda @KabirKhan just info why jandex update
[1:41 PM] Tomaz Cerar: it was done to match weld 2.4.0 upgrade
[1:41 PM] Tomaz Cerar: otherwise weld logs warn
[1:41 PM] Tomaz Cerar: as it is expcting something in jandex that was fixed in 2.0.3
[1:42 PM] Tomaz Cerar: so as such, not a big deal if component is not upgraded, but it should be eventually

Core is already using 2.0.3 but it is overridden in full's build which is wrong. tomazcerar will link an issue to fix that once he gets going.