Everyone wants an easier, quicker exam these days—and getting rid of the experimental section / argument essay on the GRE is undoubtedly a universally welcome development. The question is: how short is too short? I can't see how these exams could become any shorter, and yet still provide the sufficient sample size of questions for an accurate test score.
To state the obvious, a shorter GRE with 46% fewer questions (just 54 multiple-choice questions instead of 100, 80 of which counted toward your score) means that each question on the upcoming GRE will be worth significantly more points—and that the exam's scoring curve will be more sensitive to careless and/or unlucky errors. Early score reports from the shorter GRE have indicated that students will lose about 1.5 points per incorrect question, versus the 1 point per incorrect question they would have lost on the 100-question GRE.
More information here: https://www.ets.org/pdfs/gre/general-test-enhancement-faqs-for-test-takers.pdf