The issue with parties has been solved, and the problem with multiplayer has been amended at least for Ryse with a new update, while unfortunately the issues still persist with Dragon Ball: Xenoverse and Resident Evil: Revelations 2.
Below you can see the full patch notes directly from the private preview forums:
DETAILS
OS version released: xb_rel_1505.150505-2009
Available: 8:00PM PT 5/6 (4AM GMT 7/5)
FIXES
Joining multiplayer matches in Ryse: Son of Rome. A fix in this update will resolve issues with joining multiplayer matches in Ryse.
Initiating a Party Session. This update contains a fix for the issue reported by the community where initiating a Party session would fail.
KNOWN ISSUES
When using a game invite to invite a friend to join a multiplayer match in Dragon Ball: Xenoverse or Resident Evil: Revelations 2, a party session may fail to initiate due to an error.
Please report any issues you discover via the Report a problem feature or in the forums!
This recently uncovered issue could mean that those that aren’t in the preview program might get the update a little later, even if it seemed almost ready a few days ago.
Posted:
Related Forum: Xbox Forum
Source: http://www.dualshockers.com/2015/05/07/new-xbox-one-may-system-software-update-preview-partly-solves-multiplayer-and-party-issues/
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