It could be not affected for You, but could be serious
the main reason of migration often - not a new features, but compatibility with other world
Example - in 6.1 (not sure about 6.2) AWS S3 components not work, because Amazon (!!!) change versions of library. For fix this You was need use manual loading proper libraries
Simple live example:
Talend 5.6 great but work only with Java 1.7
MacBook + High Sierra - great but work only with Java 1.8
You have a choice - freeze everything or upgrade. You could do it in local office, but could not do this with all world
