BA.3.2 isn't really new. First detected in South Africa around Novemer 2024. Since then it has benn deteted in 23 other countries. US detections came from checking the waster water from aircraft and domestic sewage.
The BA.3.2. has about 70-75 substitutions and deletions in the spike protein gene sequence relative to JN.1 and its descendant, LP.8.1
This causes somme conceren about immune evasion from either previous Covid disease or by the vaccines. Lab studies show BA.3.2 evades antibodies activated by COVID vaccines due to spike protein mutations.
However, the case numbers are not rapidly going up either. The WHO states approved vaccines are still expected to protect against severe disease.
BA.3.2 has split into two main branches BA.3.2.1, assigned Pango ID RD, and BA.3.2.2, assigned RE. The RE.1 sublineage is currently drawing the most attention.