Kikar reports on some of what was discussed at the conference. I personally find the conclusions the most interesting part. 

1. Regarding the kashrut reforms, they concluded with a statement that the Rabbis of Israel announce that they will instruct anyone who follows their instruction not to rely on any kashrut given according to this plan, as it will present a stumbling block to the public

2. Regarding conversions they concluded with a statement saying that this reality, of taking the conversion system out of the hands of the Chief Rabbinate, will cause a division of separate communities, with the need to create a "sefer yuchsin" and conversions performed by anyone other than the Rabbanut will not be recognized by the rabbis of Israel.

Interesting statements. 

Regarding the kashrut statement, the Haredim dont listen to the Rabbanut and have all their own hechshers anyway. For now they base it on the Rabbanut but will have no problem functioning without. The masorati and secular dont care about the Rabbanut. They'll see the food is kosher by a different organization and will be fine with that. Many among the Dati Leumi follow the Rabbanut, but will they stop eating the Haredi hechshers because the Rabbanut is no longer? Many Dati Leumi will already eat Tzohar hechsher, along with the Haredi hechshers and many don't even rely on plain Rabbanut. I am not sure their statement, or threat, is quite as strong as they make it out to be.

Regarding the conversion statement, which I think is potentially a more significant issue, they already do not recognize conversions performed by organizations other than the Rabbanut, so this is not much of a change. Even the beis din of Rav Nissim Karelitz, an extremely prestigious beis din, was not recognized by the Rabbanut for conversions.