First, see if he follows thru on anything. This may just be a press release. Second, see if any politicals are released, those with no charges and no trials. Third, see if any sentence longer than a week or two remaining is releases. Fourth, see if it just traffic offenders and shoplifters. Sixth, see if Abbas is boosted or humiliated. This could be like the Turkey deal, an apology followed by a leaked near-mortal insult.
Austrian police say they expect 10,000 migrants to arrive from Hungary (DPA)
from the article: Netanyahu to U.S.: I'll free Fatah prisoners to boost Abbas