Summary
- Investors waiting to complete their I Bond allocation for 2017 have the green light: Buy in November.
- A fixed rate of 0.1% means these I Bonds should be held longer than I Bonds with a fixed rate of 0.0%.
- Terms on EE Bonds remained the same: A fixed rate of 0.1%, but a doubling in value if held for 20 years.
Treasury Inflation-Protected Securities 
Note, "when you establish an account..." It does say "at any time" (perhaps someplace else?) Regs are tricky!