It's not exactly a uniform movement. But, if you want a list, the one from the top of the wikipedia article on Progressive Christianity strikes me as a pretty accurate representation of the emphases:

• A spiritual expressiveness, including participatory, arts-infused worship as well as a variety of spiritual disciplines and practices such as prayer or meditation.
• Intellectual integrity and creativity, including an openness to questioning and an insistence upon intellectual rigor.
• Understanding of spirituality as a real affective and psychological or neural state (see Neurotheology)
• Critical interpretation of the scripture as a record of human historical & spiritual experiences and theological reflection thereupon instead of a composition of literal or scientific facts. Acceptance of modern historical Biblical criticism.
• Acceptance (although not necessarily validation) of people who have differing understandings of the concept of "God", such as pantheism, deism, non-theism, as a social construct, or as community.
• Understanding of church communion as a symbol or reflection of the body of Christ
• An affirmation of Christian belief with a simultaneous sincere respect for values present in other religions and belief systems. This does not necessarily mean all Progressive Christians believe that other religious traditions are as equally valid as Christianity, but rather, that other faiths have certain values and tenets that everyone, including Christians, can learn from and respect.
• An affirmation of both human spiritual unity and social diversity
• An affirmation of the universe, and more immediately the Earth, as the natural and primary context of all human spirituality.
• An unyielding commitment to the Option for the poor and a steadfast solidarity with the poor as the subjects of their own emancipation, rather than being the objects of charity.
• Compassion for all living beings.
• Support for LGBT rights and affirmation, including, but not limited to, support for same-sex marriage, affirmation of gay, lesbian, and bisexual individuals as authentic Christians, affirmation of trans identity, and LGBT rights in general.