Drive the Jeep and take note of any problems. If problems are apparent, you can scan the TSBs and see if you are experiencing the symptoms that are dealt with by the TSB. A full list is at Milous' site:
A TSB is not a recall. The dealer is obligated to confirm that you are experiencing the symptoms before they apply the update. So be prepared to explain what you have experienced, particularly if it matches with a symptom covered by a TSB.
Your dealer can check via the VIN number whether any particular TSB has already been applied. Some reports on this site seem to indicate that some dealers do the brush off, rather than doing a proper check. If they say a TSB has been applied, but you don't trust their verbal report, they should be able to show you a printed output. If one dealer is a pain, you can always find another.
Good luck with the new WK2!!