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I'm glad for this change because the only reason I carry the bipolar 1 diagnosis is due to mixed episodes. I've always felt I really fit the criteria for bipolar 2 more closely with the exception of those mixed features.

Changes To Bipolar Disorder Treatment In The New DSM-5

Mixed episodes have also been eliminated. Instead of labeling an episode as mixed, the provider will now have the option to specify a manic or depressive episode with a certain specification, “with mixed features” attached to it. The goal is to pinpoint the predominant mood.
According to the DSM-V, a person must now exhibit changes in mood as well as energy to classify for bipolar disorder. For example, a person would have to be highly irritable and impulsive in addition to not having a need for sleep. Changing these criteria helps to separate bipolar disorders from other illnesses that may have similar symptoms. The intention is to cut down on misdiagnosis, resulting in more effective bipolar disorder treatment.
A bipolar 2 diagnosis can now include episodes with mixed features. According to past editions of the manual, a person who had mixed episodes would not be diagnosed with bipolar 2. This change has made it easier to put people in less severe categories than bipolar 1.
- See more at: Changes To Bipolar Disorder Treatment In The New DSM-5