Ok, this is just in. Apparently Tokyo TV, earlier this evening. has announced that we are going to have TWO weeks without a Bleach Episode. No word yet on why this is, but the next episode (Episode 78) will be shown next month, May 2nd. According to their official release schedual for episodes, the follow episodes goes as followed:
Episode 78 (30 minutes long) - May 2nd
Episode 79 (30 minutes long) - May 9th
Episode 80 (30 minutes long) - May 16th
Lastly, according to AnimeNewsNetwork, Bleach has now been confirmed to start on Adult Swim sometime in September.