Before you think we're leading you up the garden path, Rebelscum is going to be clear that this is a rumour report. We have no proof that the following is accurate, but the reliable reputation of the source goes a long way to confirming that the descriptions - which seem to be based off preliminary images - are trustworthy
Set 75223 [$9.99, 62 pieces] is the naboo starfighter in microfighter form, it comes with what appears to be young anakin and just the dome of r2 
Set 75228 [$19.99, 177 pieces] is labeled as death star escape in that catalog, however that is widely believed to be in naming error.  the image shows a small brick built escape pod from tantive iv including r2 and 3po, and a brick built dewback with sandtrooper 
 the dewback is that nice sand green colour and is fairly decent size looking.
 
 Set 75225 [$14.99, 109 pieces] is the elite praetorian guard battle pack, it shows 3 praetorian guards, and its debatable as to how many different helmets and of which guard they actually are, and if they all have the new legs or the old skirts 
 they do come with a first order stormtrooper, and a little side build 
 the build looks like a nice addition and fit with set 75216 released this summer 
 with a weapons rack, droid and some black thing 
 again the prelim images are really poor quality 
 
Set 75226 [$14.99, 118 pieces] is the inferno squad, straight from the book and video game battlefront 2 
 like all battle packs there are 4 figs 
 it is pretty certain that iden versio, del meeko, and gideon hask are represented 
 hopefully the 4th agent, seyn marana is as well 
 the side build is a little red/black/grey ship/sled/speeder thing 
 probably a microfighter-esque version of the corvus 
Sets 75233 [$49.99, 389 pieces] is an update of 2014s droid gunship [75042] 
 appears to include yoda, a wookiee [possibly chief tarrful], and 2 battle droids 
 
Set 75234 [$59.99, 689 pieces] continuing with the episode 3 remade sets is this at-ap [2014 we also saw the 75043 at-ap] 
 hard to tell what has been updated for 2019 
 minifigs appear to include commander gree, a kashyyyk scout trooper, another wookiee [chewbacca?], and 2 more battle droids 
 
 Set 75235 [$29.99, 132 pieces], the 4+ x-wing starfighter 
 this is a small x-wing with an open side cockpit, single piece wings, and a side build of what is assumed to be a death star cannon 
 luke, r2 and a stormtrooper complete the set 
 
Set 75237 [$19.99, 77 pieces] is the 4+ tie fighter, a fairly decent scaled down version of the classic imperial ship and comes with a tie fighter pilot and a rebel fleet trooper 
 the side build is a control panel or something 
 
Set 75247 [$14.99, 62 pieces], the 4+ a-wing 
 like the other 4+ ships, it is a small scale version of the normal system set [75175], complete with the same pilot and another fig 
 either c-3po or a rebel technician
 
 The launch of a new 4+ line for the 
Star Wars theme looks to be replacing the old Juniors line. Designed for children aged 4 to 7 years old, the 4+ line will acts as a transition from the Duplo to the regular system themes. These sets will have chunky bricks and be easy to assemble, and will offer little detail or complex builds. Much lime the more basic sets of the 70s and 80s, it has been suggested that the 4+ 
Star Wars line will do as much to draw a new age group to the theme as it will capture the look of the original, less-evolved 
Star Wars sets of 1999.