The leaders of the 3 countries have met a few days ago, agreeing on a "mini-Schengen" to be established. Trade agreements already exist, but as the same, old separate customs checks remain, they are not efficient.
The 3 countries have agreed to accept national IDs at all border crossings and set up streamlined, joint customs check to save a lot of time and money while allowing for much easier passing of goods.
Montenegro has mostly dismissed the idea, while Bosnia is still a potential member.
I'm not really sure how and if it will work out, but if they manage to allow for easy passing of goods and people, then most likely a Good development.
https://www.euronews.com/2019/11/11/western-balkan-leaders-plot-their-own-mini-schengen-zoneEdit: Forgot to add, Kosovo is pissed at Albania for not "consulting" with them before making any decisions. Kosovo is also applying a 100% tax on goods from Serbia since last year.
Albin Kurti, who is also Kosovo’s prime minister-in-waiting, stated that the second ‘Balkan mini-Schengen’ meeting was unexpected for him after he had talked with Albania’s Prime Minister Edi Rama few weeks ago. He added that the meeting “shouldn’t have been held”