There is always talk of talks but reality is different. Albanians despise Kosovars and considers the haughty cunts, while Kosovars consider Albanians backward primitives. Even in diaspora there is a sharp divide between Albanians and Kosovars. The Kosovar ruling oligarchy is horribly corrupt, even by the standards of the region and will certainly not share it's loot with the Albanian ruling elites. So while the countries share the heritage and cooperate when mutually beneficent they will not unify as long as EU funds come flowing to Kosovo.
Also Serbian military is in no position to retake kosovo due to two decades of budget cuts, not to mention that any military action in Kosovo would mean getting bombed by USA (Serbian air defence is much worse than in 1999).
Syria is in no position to fight Turkey, while PKK strength in Turkey has been broken in 2015-16 campaign, with PKK in Iraq noth being strong enough to pose serious threat, while YPG has too many problems to consider mayor action, although they still might leeroy their way into serious strategic blunder.