For those wondering, the recent WWE Vintage Collection show that featured Bill Goldberg is a sign that WWE is still interested in having him appear at WrestleMania 30. They have reached out to him but no deal has been signed as of this writing.
There has been some talk as of late that the 2014 WWE SummerSlam pay-per-view will take place at Madison Square Garden in New York City. In past years, SummerSlam has always taken place at the STAPLES Center in Los Angeles, CA. Part of the reason for this is due to WrestleMania 31 being held in California. There is also talk of holding the 2015 Royal Rumble in either Anaheim or Los Angeles.