Wisely, Muni has tampered little with the frequency of its "trunk lines" during commuter hours -- those would be workhorses like the 38 Geary and 1 California. But if you work or ride during off-hours, you'll be affected.
In preparation for Saturday's rollout, Muni's new, truncated schedule has been uploaded onto 511 trip planner and Google Maps.
Also, you can click here for Muni's own before-and-after frequency guide for each transit line.
Finally, across-the-board cuts are a dubious remedy for ailing transit services and make for horrendous PR. But Muni is running out of blood to bleed; next thing out is its veins. At some point you've just got to cut the check.