Do you have more information on this?
During the past off-season, while the Dutch league couldnt get clubs to confirm their participation in the Eredivisie, it came out in Limburg TV L1 that clubs where looking to move over to the Oberliga.
It later came out that the club is Tilburg who has been making the most noise about joining and have asked the DEB, along with the LEV-NRW (organization who controls the Oberliga West) and they have all agreed they would be permitted to join. The second club, Heerenveen also wants to join but they didnt submit their application on time to be considered. The Dutch Federation responded to the rumours that Dutch clubs wanted to leave for Germany, they sort of backed the idea but said they couldnt do it this season due to the lack of clubs and the problems it would cause for this season.
Tilburg has taken the greatest steps to making the move, the Oberliga clubs have all pretty much agreed that bringing in the Dutch would be great for their league, however they demand that Tilburg adheres to the rules of the league. Which includes reducing the number of imports so this season the club has self imposed rules on themselves that they will dress the required number of imports according to Oberliga West rules.
This season there is suppose to be a Cup tournament between 3 clubs from the Oberliga West and the Eredivisie. Those being ESC Moskitos Essen, Herner EV the powerhouse EV Füchse Duisburg. But nothing have since but mentioned other than I believe Dolphin Kemphanen said they wont take part.
Tilburg and Heerenveen have sort of grown tired of the Eredivisie, they placed on ultimatum on the clubs during the off-season to make up their minds if they were playing in the league or not. They want to play against better competition, they want more matches and a more professional setting.
Funny enough, before Tilburg has even been accepted into the German ranks, their President already wants them into the DEL2. So atleast he has goals.
As cyberdork has kind of mentioned, losing the leagues best Dutch clubs would absolutely destroy the league and bring it down to just three, one of them Belgian. The rumour right now is that Kemphanen and Limburg would just merge into the Eerste divisie which is currently a 10 club league. Tilburg has said they will dress a second unit in the Eerste divisie and would keep their youth squads all in the Dutch system. Heerenveen, who is interested in leaving, has been pretty quiet about what they are going to do going forward.