[EDIT: Apparently the songs are available now! Go get them! - T]
If you really can’t wait until Sonic Boom or Summer of Sonic to get your Crush 40 fix this year, new songs from their upcoming EP are available for download.
iTunes currently has Rise Again and Sonic Youth listed for a 4th of July release (although you can download them right now), for the not-so-bank-breaking cost of 79p each. As of this moment, One of Those Days is not listed for download.
You may also be interested in the physical CD release of their Rise Again EP, which will contain Song of Hope (also available through iTunes) along with the three new songs. The CD will likely be a Japan-only release through Wavemaster Entertainment, retailing at 1,260 yen (approximately £10/$15). This is due for launch on the 1st of August, and can be ordered online through HMV Japan; anyone outside of the land of the rising sun will have to import in order to get hold of a copy.